Malicious PDF — malware analysis report

Static analysis result for SHA-256 79c498acc92df2d1…

MALICIOUS

PDF

49.6 KB Created: 2018-06-11 08:50:31 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 31d977b7ce196ee18507fc48e85ffc85 SHA-1: a899d016441c143af2def06f339e96e66332746b SHA-256: 79c498acc92df2d1bd6ad4c10514b5745cb02b3d2996d2d2a72d156dc033306e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by an ML classifier and contains heuristics indicating it is a fake 'free download' SEO-poisoning document. It directs users to download a file from the URL http://uncpbisdegree.com/download3.php?q=technical-manual-woodward-psg-governor.pdf, which is likely a malicious payload. The document body contains numerous URLs, many of which are related to downloading the 'technical manual woodward psg governor', further supporting the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7351

Heuristics 4

  • Fake 'free download' SEO-poisoning PDF critical PDF_SEO_FAKE_DOWNLOAD
    The ML classifier flagged this PDF AND it carries a visual download/call-to-action lure AND an off-domain server-side download-gateway link whose query string names a document payload. This three-signal conjunction is the fake-document / 'free PDF download' SEO-poisoning delivery pattern: the page is padded with benign decoy links to dilute classifier scores while funnelling the victim through the gateway to malware/scareware. Acting only on the conjunction keeps benign download-bearing PDFs from being misflagged.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://uncpbisdegree.com/download3.php?q=technical-manual-woodward-psg-governor.pdf PDF link annotation
    • http://uncpbisdegree.com/download4.php?q=technical-manual-woodward-psg-governor.pdfIn PDF document text
    • http://www.pdfsdocuments2.com/t/59/technical-manual-woodward-psg-governor.pdfIn PDF document text
    • http://www.woodward.com/WorkArea/DownloadAsset.aspx?id=2147484616In PDF document text
    • http://dizsurf.com/pdf-reader/technical-manual-woodward-psg-governor.pdfIn PDF document text
    • http://severy.de/technical/manual/technical_manual_woodward_psg_governor.pdfIn PDF document text
    • http://wixbox.de/technical/manual/technical_manual_woodward_psg_governor.pdfIn PDF document text
    • http://cnclan.de/technical/manual/technical_manual_woodward_psg_governor.pdfIn PDF document text
    • http://netrek.de/technical/manual/technical_manual_woodward_psg_governor.pdfIn PDF document text
    • http://lecoco.de/technical/manual/technical_manual_woodward_psg_governor.pdfIn PDF document text
    • https://www.tradebit.com/filedetail.php/202872710-woodward-psg-governor-operating-and-workshop-serviceIn PDF document text
    • https://pligg.com/downloads/202872710-woodward-psg-governor-operating-and-workshop-service-book/In PDF document text
    • http://www.woodward.com/SmallEngineGovernors.aspxIn PDF document text
    • http://riverside-resort.net/1/the-teachings-of-abraham-the-master-course-cd-program-the-master-course-cd-programme.pdfIn PDF document text
    • http://riverside-resort.net/1/the-green-fool.pdfIn PDF document text
    • http://riverside-resort.net/1/student-exploration-photosynthesis-lab-gizmo-answer-key.pdfIn PDF document text
    • http://riverside-resort.net/1/soil-mechanics-and-foundation-engineering-in-si-units-kr-arora.pdfIn PDF document text
    • http://riverside-resort.net/1/shurflo-diaphragm-pump-wiring-diagram.pdfIn PDF document text
    • http://riverside-resort.net/1/the-sky-sports-football-yearbook-2003-2004.pdfIn PDF document text
    • http://riverside-resort.net/1/silvertone-sslr1-guitars-owners-manual.pdfIn PDF document text
    • http://riverside-resort.net/1/superman-comic-book-facts.pdfIn PDF document text
    • http://riverside-resort.net/1/solutions-manual-numerical-methods-with-matlab-3rd.pdfIn PDF document text
    • http://riverside-resort.net/1/smoking-and-weight-loss-effects.pdfIn PDF document text
    • http://www.woodward.com/WorkArea/DownloadAsset.aspxIn PDF document text
    • https://www.tradebit.com/filedetail.php/202872710-woodward-psgIn PDF document text
    • https://pligg.com/downloads/202872710-woodward-psg-governorIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://www.manualslib.com/manual/1298972/Woodward-Sg-Governor.htmlIn PDF document text
    • https://www.manualslib.com/brand/woodward/In PDF document text
    • https://www.manualslib.com/brand/woodward/controller.htmlIn PDF document text
    • https://www.manualslib.com/products/Woodward-Sg-Governor-8771537.htmlIn PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=617350In PDF document text
    • http://go.microsoft.com/fwlink/?LinkId=521839&CLCID=0409In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=246338&CLCID=0409In PDF document text
    • https://go.microsoft.com/fwlink/?linkid=868922In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=286759&CLCID=409In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=617297In PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007440.bin
c3d23cce6a49c5eb65f27f6a4dc7f7ed7923ea8c5aaf3ef15e4073b2062a5930
pdf-font-stream PDF embedded font (sfnt) at offset 0x7440 14160 bytes
font_01_sfnt_off00009fd6.bin
653bd84f88e59f3320936f65495db6138c151cbc835f4dcc8ce7c5270ca3581c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD6 9340 bytes